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US2366944A - Manufacture of insulated conductors or other coated bodies - Google Patents

Manufacture of insulated conductors or other coated bodies Download PDF

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Publication number
US2366944A
US2366944A US471486A US47148643A US2366944A US 2366944 A US2366944 A US 2366944A US 471486 A US471486 A US 471486A US 47148643 A US47148643 A US 47148643A US 2366944 A US2366944 A US 2366944A
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United States
Prior art keywords
wire
coating
thermoplastic material
manufacture
insulated conductors
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Expired - Lifetime
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US471486A
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Veit Julius
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/20—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/20—Articles comprising two or more components, e.g. co-extruded layers the components being layers one of the layers being a strip, e.g. a partially embedded strip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06—Rod-shaped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/19—Wire and cord immersion

Definitions

  • This invention relates to the manufacture of insulated conductors or other coated bodies.
  • Conductors-e. g., wires-(hereinafter referred to as wires) are covered with multicolored insulation in different combinations of colors for the purpose of identification.
  • Hitherto such insulated wires have been made by first producing multicolored sleevings, which may be made of thermoplastic materials-i. e., cellulose acetate, polyvinyl chloride, polyisobutylene, polyethylene (for example, the product known by the trade name Polythene), the material known by the trade name Nylon and mixtures of these materials, and then inserting the wire in these sleevings. Insulated wire made in this way is necessarily limited in length, it being impracticable to produce very great lengths of insulated wire by that method.
  • any desired length of wire or collection of wires or other body or collection of other bodies (hereinafter referred to as wire) covered with a multicolored insulation or coating (hereinafter referred to as coating) can be obtained by causing the wire to travel longitudinally and applying two or more differently colored streams of thermoplastic material to the surface of the moving wire, the said differently colored streams being of such widths and arranged in such a manner as to produce a complete coating round the wire, which coating will exhibit continuous stripes or continuous longitudinal portions of the different colors.
  • the wire may be caused to pass through a die and covered with the thermoplastic material in one operation.
  • the differently colored thermoplastic materials may be filled in the molten state into separate feeding chambers from which they issue or are caused to issue through suitable apertures, the arrangement being such that the issuing streams of differently colored thermoplastic material produce a complete coating round the wire, which coating will exhibit continuous stripes or continuous longitudinal portions of the difierent colors.
  • FIG. 1 An apparatus suitable for use in covering a wire with a three-colored coating is represented diagrammatically and by way of example by the accompanying drawing which shows in Figure 1 the apparatus in cross-sectional plan, Figure 2 being a rear elevation of Figure 1 and showing the wire feeding means.
  • 4a and 4b are respectively the inlets and outlets for the steam or hot water.
  • the three streams of thermoplastic material issue by gravity through tubes 5 communicating with the bottoms of the chambers and pass through outlets 6 on to the wire I which is presumed to be moving perpendicularly to the plane of the paper-i. e., longitudinally of itself.
  • Cocks B serve to regulate the flow of thermoplastic material and to shut off the flow when the feeding is to be stopped.
  • the outlets 6 are of such sizes and arranged so close together that the issuing streams will produce a complete coating round the wire.
  • the coating will exhibit continuous longitudinal stripes of the three different colors.
  • the outlets 6 are so shaped and related as to combine to form a cylindrical sleeve concentrically surrounding the wire I, the axial dimension of such sleeve being at least equal to the diameter of one of the tubes 5.
  • Each outlet is of part annular cross-section in the plane containing the axes of the tubes 5 as shown in Figure 1 of the drawing and is formed with arcuate upper and lower horizontal flanges 611 (only the lower flanges being shown) and vertical flanges 6b which are radial in relation to the axis of the wire I, the vertical flanges of successive part annular outlet 6 abutting against each other or being only very narrowly spaced.
  • thermoplastic material will ooze smoothly on to the travelling wire and will have suflicient lateral, spread to ensure that there are no uncoated lines of demarcation of the distinctively coloured ribbons of thermoplastic ma terial upon the wire.
  • the wire I is wound on to a take-up spool or pulley 9 from a supply spool ill in well-known manner after it has travelled a sufilcient distance from the coating device to enable the thermoplastic material to harden in a film-like or ribbon-like coating.
  • a continuous process for coating wire with distinctively coloured ribbons of thermoplastic material consisting in feeding the wire axially, extruding directly on to the travelling wire distinctively coloured streams of molten thermoplastic material supplied from various sources of supply each containing a distinctively coloured molten mass 0! the material, and confining the flow of thermoplastic material into parallel ribbon-like streams of such widths and arranged'in such manner as to form a multi-coloured complete coating for the wire.
  • thermoplastic material consisting in feeding the wire axially, extruding directly by gravity on to the travelling wire distinctively coloured streams of molten thermoplastic material supplied from various sources of supply each containing a distinctively coloured molten mass of the material, and confining the flow of thermoplastic material into parallel ribbon-like streams of such widths and arranged in such manner as to form a multicoloured complete coating for the wire.
  • a method of coating wire with distinctively coloured ribbons of thermoplastic material consisting in feeding the wire axially through an applicator, supplying distinctively coloured masses of molten thermoplastic coating material to the applicator from separate sources each containing a supply of distinctively coloured molten thermoplastic material and spreading the thermoplastic coating material on to the wire in distinctively coloured ribbons 0! such widths and arranged in such manner as to completely coat the wire by extruding the distinctively colored masses of molten thermoplastic material irom the applicator directly on to the axially travelling wire.
  • a method of coating wire with distinctively coloured ribbons oi thermoplastic material consisting in ieeding the wire axially and vertically through an applicator, supplying distinctively coloured masses of molten thermoplastic coating material to the applicator from separate sources each containing a supply of distinctively coloured molten thermoplastic material and spreading the thermoplastic coating material on to the wire in distinctively coloured ribbons by extruding the distinctively coloured masses of molten thermoplastic material by gravity irom the applicator directly on to the axially travelling wire in distinctively coloured parallel ribbons.
  • a method of coating wire consisting in feedin: the wire axially, and meanwhile extruding directly on to diflerent areas 01 the same face of the wire streams of diflerent molten thermoplastic material oi such widths and so arranged as to produce a complete coating around the wire.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Insulated Conductors (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Jan. 9, 1945. J v n- 2,366,944
MANUFACTURE OF INSULATED CONDUCTORS OR OTHER COATED BODIES Filed Jan. 6. 1945 nventor JUUUS VEIT Attorney Patented Jan. 9, 1945 MANUFACTURE OF INSULATED CON- DUCTORS OR OTHER COATED BODIES Julius'Velt, Hounslow West, England Application January 6, 1943, Serial No. 471,486 In Great Britain March 25, 1941 Claims.
This invention relates to the manufacture of insulated conductors or other coated bodies.
Conductors-e. g., wires-(hereinafter referred to as wires) are covered with multicolored insulation in different combinations of colors for the purpose of identification. Hitherto such insulated wires have been made by first producing multicolored sleevings, which may be made of thermoplastic materials-i. e., cellulose acetate, polyvinyl chloride, polyisobutylene, polyethylene (for example, the product known by the trade name Polythene), the material known by the trade name Nylon and mixtures of these materials, and then inserting the wire in these sleevings. Insulated wire made in this way is necessarily limited in length, it being impracticable to produce very great lengths of insulated wire by that method.
According to the invention, any desired length of wire or collection of wires or other body or collection of other bodies (hereinafter referred to as wire) covered with a multicolored insulation or coating (hereinafter referred to as coating) can be obtained by causing the wire to travel longitudinally and applying two or more differently colored streams of thermoplastic material to the surface of the moving wire, the said differently colored streams being of such widths and arranged in such a manner as to produce a complete coating round the wire, which coating will exhibit continuous stripes or continuous longitudinal portions of the different colors. Thus, the wire may be caused to pass through a die and covered with the thermoplastic material in one operation.
The differently colored thermoplastic materials may be filled in the molten state into separate feeding chambers from which they issue or are caused to issue through suitable apertures, the arrangement being such that the issuing streams of differently colored thermoplastic material produce a complete coating round the wire, which coating will exhibit continuous stripes or continuous longitudinal portions of the difierent colors.
An apparatus suitable for use in covering a wire with a three-colored coating is represented diagrammatically and by way of example by the accompanying drawing which shows in Figure 1 the apparatus in cross-sectional plan, Figure 2 being a rear elevation of Figure 1 and showing the wire feeding means.
Thermoplastic material in three different colors-e. g., red, yellow and blue-is filled in the molten state into three separate feeding chamhers I, 2 and 3 respectively each of which is provided with means-e. g., a steam or hot-water jacket 4--for keeping the thermoplastic material sufllciently fluid. 4a and 4b are respectively the inlets and outlets for the steam or hot water. The three streams of thermoplastic material issue by gravity through tubes 5 communicating with the bottoms of the chambers and pass through outlets 6 on to the wire I which is presumed to be moving perpendicularly to the plane of the paper-i. e., longitudinally of itself. Cocks B serve to regulate the flow of thermoplastic material and to shut off the flow when the feeding is to be stopped. The outlets 6 are of such sizes and arranged so close together that the issuing streams will produce a complete coating round the wire. The coating will exhibit continuous longitudinal stripes of the three different colors.
The outlets 6 are so shaped and related as to combine to form a cylindrical sleeve concentrically surrounding the wire I, the axial dimension of such sleeve being at least equal to the diameter of one of the tubes 5. Each outlet is of part annular cross-section in the plane containing the axes of the tubes 5 as shown in Figure 1 of the drawing and is formed with arcuate upper and lower horizontal flanges 611 (only the lower flanges being shown) and vertical flanges 6b which are radial in relation to the axis of the wire I, the vertical flanges of successive part annular outlet 6 abutting against each other or being only very narrowly spaced. The inner edges of the flanges ea and 6b form the perimeters of the mouths of the outlets 6, and with normal flow of the thermoplastic material from such mouths, the thermoplastic material will ooze smoothly on to the travelling wire and will have suflicient lateral, spread to ensure that there are no uncoated lines of demarcation of the distinctively coloured ribbons of thermoplastic ma terial upon the wire.
The wire I is wound on to a take-up spool or pulley 9 from a supply spool ill in well-known manner after it has travelled a sufilcient distance from the coating device to enable the thermoplastic material to harden in a film-like or ribbon-like coating.
What I claim is:
1. A continuous process for coating wire with distinctively coloured ribbons of thermoplastic material consisting in feeding the wire axially, extruding directly on to the travelling wire distinctively coloured streams of molten thermoplastic material supplied from various sources of supply each containing a distinctively coloured molten mass 0! the material, and confining the flow of thermoplastic material into parallel ribbon-like streams of such widths and arranged'in such manner as to form a multi-coloured complete coating for the wire.
2. A continuous process (or coating wire with distinctively coloured ribbons oi thermoplastic material consisting in feeding the wire axially, extruding directly by gravity on to the travelling wire distinctively coloured streams of molten thermoplastic material supplied from various sources of supply each containing a distinctively coloured molten mass of the material, and confining the flow of thermoplastic material into parallel ribbon-like streams of such widths and arranged in such manner as to form a multicoloured complete coating for the wire.
3. A method of coating wire with distinctively coloured ribbons of thermoplastic material consisting in feeding the wire axially through an applicator, supplying distinctively coloured masses of molten thermoplastic coating material to the applicator from separate sources each containing a supply of distinctively coloured molten thermoplastic material and spreading the thermoplastic coating material on to the wire in distinctively coloured ribbons 0! such widths and arranged in such manner as to completely coat the wire by extruding the distinctively colored masses of molten thermoplastic material irom the applicator directly on to the axially travelling wire.
4. A method of coating wire with distinctively coloured ribbons oi thermoplastic material consisting in ieeding the wire axially and vertically through an applicator, supplying distinctively coloured masses of molten thermoplastic coating material to the applicator from separate sources each containing a supply of distinctively coloured molten thermoplastic material and spreading the thermoplastic coating material on to the wire in distinctively coloured ribbons by extruding the distinctively coloured masses of molten thermoplastic material by gravity irom the applicator directly on to the axially travelling wire in distinctively coloured parallel ribbons.
5. A method of coating wire consisting in feedin: the wire axially, and meanwhile extruding directly on to diflerent areas 01 the same face of the wire streams of diflerent molten thermoplastic material oi such widths and so arranged as to produce a complete coating around the wire.
JULIUS vErr.
US471486A 1941-03-25 1943-01-06 Manufacture of insulated conductors or other coated bodies Expired - Lifetime US2366944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4036/41A GB550246A (en) 1941-03-25 1941-03-25 Improvement in the manufacture of insulated conductors or other coated bodies

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429537A (en) * 1944-10-18 1947-10-21 Edgar T Ward Method and apparatus for producing banded cord lengths
US2579696A (en) * 1948-08-02 1951-12-25 David L Perlman Frozen confection apparatus
US2592674A (en) * 1949-03-22 1952-04-15 Surprenant Mfg Co Striping machine for electric conductors and the like
US2610607A (en) * 1949-07-26 1952-09-16 Hans D Isenberg Device for color coding insulated conductors
US2659343A (en) * 1950-12-01 1953-11-17 Gen Aniline & Film Corp Coating liquid applicator
US3054710A (en) * 1954-08-05 1962-09-18 Adam Cons Ind Inc Insulated wire
US3195499A (en) * 1960-12-09 1965-07-20 Rca Corp Wire marking apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020073B (en) * 1952-08-08 1957-11-28 Kdg Kabel Und Draht G M B H Process for the production of flat electrical cables
DE1026813B (en) * 1952-08-28 1958-03-27 Adolf Schnakenberg Device for sheathing electrical wires with screw-shaped, non-mixing plastics of different colors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429537A (en) * 1944-10-18 1947-10-21 Edgar T Ward Method and apparatus for producing banded cord lengths
US2579696A (en) * 1948-08-02 1951-12-25 David L Perlman Frozen confection apparatus
US2592674A (en) * 1949-03-22 1952-04-15 Surprenant Mfg Co Striping machine for electric conductors and the like
US2610607A (en) * 1949-07-26 1952-09-16 Hans D Isenberg Device for color coding insulated conductors
US2659343A (en) * 1950-12-01 1953-11-17 Gen Aniline & Film Corp Coating liquid applicator
US3054710A (en) * 1954-08-05 1962-09-18 Adam Cons Ind Inc Insulated wire
US3195499A (en) * 1960-12-09 1965-07-20 Rca Corp Wire marking apparatus

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Publication number Publication date
GB550246A (en) 1942-12-31

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